Open to freelance and professional work
I'm a Technical Lead with 7+ years of experience as a software engineer. For about the last 3 of those years I have led a team while still writing code myself. I currently work at a B2B fintech company in Jakarta, where my team builds payment systems. I also founded dagangyuk.id, a point-of-sale app now used by more than 50 small businesses, so I'm used to weighing technical quality against what the business needs. Outside my main job I take freelance projects: web apps, mobile apps, CMS/CRM and backend systems.
Right now
Day job · Present
B2B fintech company · Jakarta
I lead an engineering squad that builds payment features for business customers. I set the technical direction, review designs and code, and still write code myself. Most of the work involves transactions and payment gateway integrations. I have also been involved in PCI DSS audit work for credit card payments.
Own product · Present
dagangyuk.id · POS for UMKM
I built dagangyuk.id myself: the Android app, the backend and the QRIS payments. Today it serves more than 50 UMKM merchants. I also handle pricing and customer support, so I know what it is like to run a product on a small budget, not only to code one.
Tech stackGo · Java · Node.js · React · Angular · Flutter · MySQL · PostgreSQL · Oracle · Redis · MongoDB
Side project
dagangyuk.id is an Android point-of-sale app for small and medium businesses in Indonesia: retail shops, warungs, restaurants and stores with several branches. It is live on Google Play with 100+ downloads, and more than 50 merchants use it. Plans start at Rp49.000 per month.
What it does
Freelance
You work with me directly, from the first call to delivery. Before starting I send a written scope and estimate, then deliver in stages so you can check progress early.
Custom web applications, admin panels and internal tools, built with React or Angular on a Go or Node.js backend. A common case is replacing spreadsheets that the business has outgrown.
Company websites with a CMS, so your team can update content without a developer. Custom CRM to keep track of leads, customers and follow-ups, or setup and integration of an existing platform if that fits better.
Android and iOS apps built with Flutter, from prototype to release on the store. I went through the same process with dagangyuk.id.
APIs, third-party integrations and payment flows, including payment gateways, QRIS and invoicing.
Taking over a codebase built quickly with AI tools or by a previous developer and getting it ready for real users: fixing bugs, closing security holes, adding tests and cleaning up the structure. Also moving an app from one stack to another, for example from a no-code or prototype setup to Go, Node.js, React or Flutter.
Architecture reviews, MVP planning and a second opinion for startups and small businesses before they commit budget to a build.
Freelance FAQ
Custom web applications and dashboards, websites with a CMS, CRM systems, Android and iOS apps, backend and API work, and payment integrations such as payment gateways and QRIS. I also take over existing codebases to fix or migrate them, and do architecture reviews and MVP planning.
Yes. For content-heavy sites I set up a CMS so your team can publish without touching code. For sales and customer data I build a custom CRM or integrate an existing one, depending on your process and budget.
Yes, this is common now. I start with a short review of the code and infrastructure, then send a list of what must be fixed before launch, what can wait, and what it would cost. From there I can fix it, rebuild parts of it, or migrate it to a stack your team can maintain.
Yes. Payments are what I work on every day at a B2B fintech company, and I built QRIS payments into dagangyuk.id. I have also been involved in PCI DSS audit work, so I am used to card data security requirements. I can add a payment gateway to your web or mobile app, or review an integration you already have.
Yes. I live in Jakarta and work remotely with clients across Indonesia and abroad. We can talk over WhatsApp, email or video call, in Indonesian or English.
It depends on the scope. After a short talk about what you need, I send a written estimate with scope, timeline and cost before any work starts.
Send me a WhatsApp message or an email with a short description of what you want to build and when you need it. For full-time or professional roles, please use LinkedIn.
Freelance & side projects
Need a web app, mobile app, CMS, CRM or backend work? Send me a WhatsApp message or an email with a short description of what you need.
Hiring & professional roles
Hiring for a technical lead or senior engineering role? Please reach me on LinkedIn. My full work history is there.